Merge branch '5.4' into 6.0

* 5.4:
  Remove duplicate line
  Reintroduce removed note

Author: javiereguiluz

components/serializer.rst

@@ -900,6 +900,11 @@ The Serializer component provides several built-in normalizers:
     Also it can denormalize ``uuid`` or ``ulid`` strings to :class:`Symfony\\Component\\Uid\\Uuid`
     or :class:`Symfony\\Component\\Uid\\Ulid`. The format does not matter.
 
+.. note::
+
+    You can also create your own Normalizer to use another structure. Read more at
+    :doc:`/serializer/custom_normalizer`.
+
 Certain normalizers are enabled by default when using the Serializer component
 in a Symfony application, additional ones can be enabled by tagging them with
 :ref:`serializer.normalizer <reference-dic-tags-serializer-normalizer>`.

security/custom_authenticator.rst

@@ -315,7 +315,6 @@ would initialize the passport like this::
     use Symfony\Component\Security\Http\Authenticator\Passport\Badge\CsrfTokenBadge;
     use Symfony\Component\Security\Http\Authenticator\Passport\Badge\UserBadge;
     use Symfony\Component\Security\Http\Authenticator\Passport\Passport;
-    use Symfony\Component\Security\Http\Authenticator\Passport\Passport;
 
     class LoginAuthenticator extends AbstractAuthenticator
     {